body,
h1,
h2,
h3,
h4,
h5,
h6,
hr,
p,
blockquote,
/*structuralelements结构元素*/
dl,
dt,
dd,
ul,
ol,
li,
/*listelements列表元素*/
pre,
/*textformattingelements文本格式元素*/
form,
fieldset,
legend,
button,
input,
textarea,
/*formelements表单元素*/
th,
td

/*tableelements表格元素*/
    {
    margin: 0;
    padding: 0;
}

li {
    list-style: none;
}

a,
b,
del,
ins {
    color: black;
    text-decoration: none;
}

em,
i {
    font-style: normal;
}


/* 解决图片间隙 */
img {
    display: block;
}

.left {
    float: left;
}

.right {
    float: right;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: normal;
    font-size: 100%;
}

html {
    font-size: 100px;
}

body {
    font: 16px "微软雅黑";
}

/* 解决父元素的高度塌陷问题 */
.clearfix::after {
    content: "";
    display: block;
    clear: both;
    height: 0;
    overflow: hidden;
    visibility: hidden;
}

.wrapper {
    width: 1140px;
    margin: 0 auto;
    /* background: cyan; */
}